Dynamical Implantation of Blue Binaries in the Cold Classical Kuiper Belt
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10455236" target="_blank" >RIV/00216208:11320/22:10455236 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=1BeLyD7iI2" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=1BeLyD7iI2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-3881/ac4bc9" target="_blank" >10.3847/1538-3881/ac4bc9</a>
Alternative languages
Result language
angličtina
Original language name
Dynamical Implantation of Blue Binaries in the Cold Classical Kuiper Belt
Original language description
Colors and binarity provide important constraints on the Kuiper Belt formation. The cold classical objects at radial distance r = 42-47 au from the Sun are predominantly very red (spectral slope s > 17%) and often exist as equal-size binaries (similar to 30% observed binary fraction). This has been taken as evidence for the in situ formation of cold classicals. Interestingly, a small fraction (similar to 10%) of cold classicals is less red with s < 17%, and these "blue" bodies are often found in wide binaries. Here we study the dynamical implantation of blue binaries from r < 42 au. We find that they can be implanted into the cold classical belt from a wide range of initial radial distances, but the survival of the widest blue binaries-2001 QW322 and 2003 UN284-implies formation at r > 30 au. This would be consistent with the hypothesized less-red to very-red transition at 30 < r < 40 au. For any reasonable choice of parameters (Neptune's migration history, initial disk profile, etc.), however, our model predicts a predominance of blue singles, rather than blue binaries, which contradicts existing observations. We suggest that wide blue binaries formed in situ at r = 42-47 au and their color reflects early formation in a protoplanetary gas disk. The predominantly VR colors of cold classicals may be related to the production of methanol and other hydrocarbons during the late stages of the disk, when the temperature at 45 au dropped to similar or equal to 20 K and carbon monoxide was hydrogenated.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA21-11058S" target="_blank" >GA21-11058S: Orbital and chemical evolution of emerging planetary systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
The Astronomical Journal
ISSN
0004-6256
e-ISSN
1538-3881
Volume of the periodical
163
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
137
UT code for WoS article
000757615200001
EID of the result in the Scopus database
2-s2.0-85125754080